Symbiosis Mechanism and Its Stability of Multi-owner Cascaded Hydropower Stations

It is a large-scale dynamic multidimensional optimization problem for optimal operation of multi-owner cascaded hydropower stations constrained by water use competition and market strategy cooperation.The competition-cooperation relationship among multi-owner hydropower stations is described accurately based on symbiosis theory and the critical point influencing strategies choice of hydropower stations is deduced by using Nash equilibrium game.And then the stability evaluation model of multi-owner cascaded hydropower station symbiosis alliance is built by considering symbiosis energy validity and benefits share parameters.Simulation results demonstrate that the benefits of cascaded hydropower stations increase in symbiosis alliance and the cascade symbiosis alliance in symmetry mutualisms pattern is most stable by comparison between four patters of the cascade symbiosis alliance.